<html>
    <head>
        <meta charset="utf-8" />
        <title>http2-connection</title>
        <style>
            img {
                width: 100px;
                height: 100px;
            }
        </style>
        <script>
            var t1 = new Date().getTime(); 
        </script>
    </head>
    <body>
        <!-- <div>http2协议</div>
        <div id="TimeShow">页面开始加载</div> 
        <script>
            var timer = setInterval(function() {
                document.getElementById("TimeShow").innerHTML = "耗时: " + ((new Date().getTime()-t1) / 1000).toFixed(2) + '秒';
            }, 4);

            window.onload = function() { 
                clearInterval(timer);
            } 
        </script> -->
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    </body>
</html>